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grimbouk

Member Since 09 May 2011
Offline Last Active Jul 12 2011 08:02 AM
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Topics I've Started

switching polarity for a solenoid

09 May 2011 - 03:01 PM

Hi all, I'm new to electronics, so this may be a silly question... I have 4 9v solenoids that I want to drive independently of each other. To do this I need to be able to reverse the polarity to the solenoids to get them to toggle in one direction or the other (they don't return when unpowered). I asked the best way to achieve this on a different forum and someone suggested I look at an "H-Bridge". I've looked and found L293D or SN754410. Both of these sound like they can drive 2 solenoids, so I'd need 2 of them to drive 4 solenoids. Is this the best approach, or does anyone else have any better / cheaper / easier suggestions? Also, the Logic voltage seems to be 5v. How would I wire this up to the Netduino? thanks Tim

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